Wendall Wierenga

Wendall Wierenga is a declared insider at 8 companies; the most frequent names are Cytokinetics Inc, Onyx Pharmaceuticals Inc and Xenoport Inc. The record holds 140 filings, for trades running from 6 November 2006 to 15 July 2025.

The open-market side counts 4 purchases for €95k alongside 63 sales for €4.2M. On balance, insiders were net sellers of €4.1M. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. The rest of the record consists of 40 share grants and 24 option exercises. So far in 2025, the count stands at no purchases and 1 sale.

In size, the median ticket on the buying side is €25k.

Most recently, on 16 July 2025, the filings show a share grant worth €5,370 in Cytokinetics Inc. The last purchase on record was published on 24 June 2015, which is 4,155 days ago. The median gap between a trade and its publication by SEC (Form 4) is 1 day. The legal deadline for a Form 4 is two business days after the transaction. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.